"fixed channel" error message
If the top of your airodump screen looks something like:
CH 6 ][ Elapsed: 28 s ][ 2008-09-21 10:39 ][ fixed channel ath0: 1
Then this means you started started airodump-ng with a fixed channel parameter (-c / –channel) but some other process is changing the channel. “CH 6” on the left is the channel that was specified when airodump-ng was started. “fixed channel ath0: 1” on the right indicates that ath0 was used when airodump-ng was started but the interface is currently on channel 1 (instead of channel 6). You might also see this channel number changing indicating that channel scanning is taking place.
It is critical that the root cause of the problem be eliminated and then airodump-ng restarted again. Here are some possible reasons and how to correct them:
There is one or more interfaces in “managed mode” and these are are scanning for an AP to connect to. Do not use any command, process or program to connect to APs at the same time as you use the aircrack-ng suite.
Other processes are changing the channel. A common problem are network managers. You can also use “airmon-ng check” on current versions of the aircrack-ng suite to identify problem processes. Then use “kill” or “killall” to destroy the problem processes. For example, use “killall NetworkManager && killall NetworkManagerDispatcher” to eliminate network managers.
If you are using the madwifi-ng driver and have more then the ath0 interface created, the driver may be automatically scanning on the other interfaces. To resolve this, stop all interfaces except ath0.
You have wpa_supplicant running at the same time. Stop wpa_supplicant.
You run airmon-ng to set the channel while airodump-ng is running. Do not do this.
You run another instance of airodump-ng in scanning mode or set to another channel. Stop airodump-ng and do not do this.
There is a known bug that affects recent versions of compat-wireless or wireless-testing drivers (shows channel as -1):
http://trac.aircrack-ng.org/ticket/742It can also means that you cannot use this channel (and airodump-ng failed to set the channel). Eg: using channel 13 with a card that only supports channels from 1 to 11.
Тема: aircrack-ng не переключает порты wi-fi (Прочитано 12980 раз)
